Index: trunk/data/validator/numeric.mapcss
===================================================================
--- trunk/data/validator/numeric.mapcss	(revision 9051)
+++ trunk/data/validator/numeric.mapcss	(revision 9736)
@@ -47,5 +47,5 @@
 }
 
-*[maxheight][maxheight !~ /^(([1-9][0-9]*(\.[0-9]+)?( (m|ft))?)|([0-9]+\'(([0-9]|10|11)(\.[0-9]*)?\")?))$/] {
+*[maxheight][maxheight !~ /^(([1-9][0-9]*(\.[0-9]+)?( (m|ft))?)|([0-9]+\'(([0-9]|10|11)(\.[0-9]*)?\")?)|none|default)$/] {
   throwWarning: tr("{0}: meters is default; period is separator; if units, put space then unit", "maxheight");
   assertMatch: "node maxheight=something";